549599791680 has 224 divisors, whose sum is σ = 1939353886080. Its totient is φ = 146523064320.

The previous prime is 549599791661. The next prime is 549599791717. The reversal of 549599791680 is 86197995945.

549599791680 is a `hidden beast` number, since 5 + 495 + 9 + 9 + 79 + 1 + 68 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 549599791599 and 549599791608.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63335502 + ... + 63344178.

Almost surely, 2^549599791680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 549599791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969676943040).

549599791680 is an abundant number, since it is smaller than the sum of its proper divisors (1389754094400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

549599791680 is a wasteful number, since it uses less digits than its factorization.

549599791680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16034 (or 16018 counting only the distinct ones).

The product of its (nonzero) digits is 220449600, while the sum is 72.

The spelling of 549599791680 in words is "five hundred forty-nine billion, five hundred ninety-nine million, seven hundred ninety-one thousand, six hundred eighty".